Are up2date repository and yum repository the same?

"Bo Xie" <[email protected]>
Newsgroups gmane.linux.rpm.yum
Message-ID <[email protected]> 
I know the following:
(1) up2date can connect and use yum repository
(2) use 'yum-arch' or 'createrepo' to create yum repository
(3) There is not official RHEL yum repository. To update RHEL, we must
use up2date.

I do not know the following:
(1) can yum connect and use up2date repository?
(2) how to create an up2date repository?

My question is: Are up2date repository and yum repository the same?

Best Regards,
Xie, Bo
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